THE NUMBERS, EXPLAINED
How to use this calculator.
Steady-state mean occupancy; guests may visit multiple rooms so shares need not sum to 100%. Desired counts are operational inputs, not safety limits.
Start with your inputs
Enter visitors entering per hour, share visiting each gallery (%), mean gallery dwell times (minutes), desired occupancy by gallery. Keep amounts in the units shown on each field. The example is a starting point, not a recommended value.
| Input | Example value |
|---|---|
| Visitors entering per hour | 120 |
| Share visiting each gallery (%) | 50,25 |
| Mean gallery dwell times (minutes) | 20,40 |
| Desired occupancy by gallery | 25,15 |
A worked example
With the example inputs above, expected gallery occupancies is 20, 20. Change the inputs to explore your own scenario.
| Result | Example answer |
|---|---|
| Expected gallery occupancies | 20, 20 |
| Excess over entered desired occupancy | 0, 5 |
How this is calculated
Expected gallery occupancies
Multiply room arrival rate by mean dwell time in hours.
Excess over entered desired occupancy
Compare average occupancy with the desired room count.
Symbols and units
- a
- Visitors entering per hour
- b
- Share visiting each gallery (%)
- c
- Mean gallery dwell times (minutes)
- d
- Desired occupancy by gallery
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions and limits
Steady-state mean occupancy; guests may visit multiple rooms so shares need not sum to 100%. Desired counts are operational inputs, not safety limits.
Calculations use the values you enter. Blank or invalid inputs show an error instead of silently substituting zero. Results are displayed to useful precision; calculations retain the underlying numeric precision.
Questions about this tool
What does the result tell me?
Expected gallery occupancies; Excess over entered desired occupancy. The result applies to the method and inputs described above. Check the units and assumptions before using it in a decision.
Why might another calculator differ?
Differences in units, rounding, timing or model definitions can produce different answers. Compare the input definitions and the method, rather than only the final number. For this tool: Steady-state mean occupancy; guests may visit multiple rooms so shares need not sum to 100%. Desired counts are operational inputs, not safety limits.
Are my inputs stored or sent to AI?
Calculations on this page happen in your browser. The separate AI question finder sends its submitted conversation to OpenAI; these calculator fields are not sent. Favourites and recent tool names are stored locally. A shared link contains the inputs you choose to include.
Further reading
MIT Operations Management: Queueing and Little’s Law ↗
Background reading; this does not imply endorsement or independent review of SumFizz.
Review status
Software example and browser checks are recorded in our quality report. No external expert review is claimed. Created with coding assistance; calculations run as ordinary browser code.
Read the quality report →